<html>

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>笑话</title>
    <link rel="stylesheet" href="style.css" />
</head>

<body>
    <div class="container">
        <h3>Don't Laugh Challenge</h3>
        <div id="joke" class="joke">笑话真好笑啊</div>
        <button id="jokeBtn" class="btn"> 点我有笑话 </button>
    </div>
</body>
<script src="script.js"></script>

</html>